https://dropeverything.com.au/post/applying-30-year-old-manufacturing-theory-your-dropbox-folder
http://5sbestpractices.ning.com/m/blogpost?id=4453316%3ABlogPost%3A27698
http://wolfig-techblog.blogspot.com.au/2015/04/office-kaizen-5s-of-electronic.html?m=1